词汇	expiring roll
释义	expiring roll n.空卷,空轴
随便看	structural shape factor of wind load structural shapes structural shear strength structural sheet structural shield structural shielding structural shift structural shock structural shock resistance Structural Shocks structural shop structural shortage of labor structural shrinkage structural signal structural signature Structural significance structural significant item structural significant itemssi structural silicone sealant structural silicone sealants Structural size structural sketch structural skin structural skin panel structural slab